Governing means for engines



'Aug. 12 192%. wwgw w. A. SMITH GOVERNING MEANS FOR ENGINES Filed July 5, 1923 Patented Aug, 12, E924.

entrain srarss WILLIAM Anna/runes SMITH, 5J3 JACKSON, TENNESSEE, A$SIGNOR OF ONE-HALE T L. 0F JACKSON, TENNESSEE.

GOVERNING MEANS FOR ENGINES.

Application filed July 3,

T0 (ZZZ whom it may concern:

Be it known that 1, WILLIAM ALEXANDER SMITH, a citizen of the United States, and resident of Jackson, in the county of Madison and State of Tennessee, have invented certain new and useful Improvements in Governing Means for Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in governing means for engines, and more particularly to accessories for such governors as are employed with uniflow engines,-the object of the invention being to provide simple and efficient means which shall be operable to insure the steady and uniform operation of the governor eccentric which transmits motion (the speed of which is controlled by the governor) from the driven shaft of the engine to the crankshaft of the valve-operating means.

A further object is to provide simple and efficient means to compensate for the weight of the governor eccentric-strap when the latter is operated to cause opening of the uniflow valves of the engine.

With these and others objects in view, the invention consists in certain novel features of construction and combinations of parts as hereinafter set forth and pointed out in the claims.

3 In the accompanying drawings,

Figure 1 is a view showing parts of the device separated;

Figure 2 is a view in elevation showing the assembled structure, and

Figure 3 is a vertical sectional view,the parts 2 and 3 being shown in elevation.

My improvements are associated with the governor eccentric-strap and are intended to carry or compensate for the weight of the latter. In Figure l of the drawing, 1 have shown a driven shaft at 1 provided with the governor eccentric 2 and tie eccentric strap 3 is connected at its lower end portion with the crank 4 of the valve shaft 5,all of which construction is well known in the art.

A supplementary eccentric 6 is secured to the shaft 1 in proximity to the governor eccentric 2, preferably by means of a set screw 7. The eccentric 6 may comprise two members having flanges 8 for the accommodation bled on the shaft 1.

1923. Serial No. 649,326.

of bolts 9 whereby the two members may be secured together after having been assem- The members composing the eccentric 6 are provided with peripheral ribs 10 which form guides for an eccentric strap 11, the latter having internal grooves in its respective members for the reception of the ribs 10.

The governor eccentric strap 3 has suitably secured to its lower portion, just over the connection of said strap with the crank of the valve shaft, a bracket 12 which is offset somewhat from the vertical plane of the eccentric strap 3 and serves for connection with the lower portion of said strap of the lower end of a compensating or helping spring 13, the upper end of said spring being connected with the strap 11 of the supplementary eccentric 6. In order that the tension of this spring may be adjusted, its lower end is adjustably connected with the bracket 12 by a thread and nut connection or in any other suitable manner.

The supplementary eccentric 6 is so adjusted on the shaft 1 with relation to the governor eccentric 2 that the weight of the strap of the latter will be practically neutralized by the action of the spring 13 in its cooperation with said eccentric strap 3 and supplementary eccentric 6, so that the weight of the governor eccentric strap 3 will not be a deterring factor when it performs its work of opening the uniflow valves to the engine cylinder.

Having fully described my invention what I claim as new and desire to secure by Let tors-Patent, is

1. In governing means for engines, the combination with a governor shaft, an eccentric thereon and an eccentric strap c0operable with a valve shaft of an engine, of a compensating spring cooperable with said strap to sustain and tend to neutralize the weight of said strap, whereby the weight of the governor eccentric strap is prevented from constituting a deterring factor when it operates to open the engine valves.

2. The combination with a driven shaft, a. governor eccentric thereon and a governor eccentric strap, of a supplementary eccentric secured to the shaft in proximity to the governor eccentric, a strap for the supplementary eccentric, and a spring connecting said last-mentioned eccentric strap with the lower portion of the governor eccentric strap.

lOt)

3. The combination with an engine shaft, a valve crank-shaft, a governor eccentric on the engine shaft and a governor eccentric strap cooperable with said eccentric and connected with the crank of the valve shaft, of an offset bracket secured to the lower portion of said eccentric strap, a supplementary eccentric secured to the engine shaft in proximity to the governor eccentric, an eccentric strap for said supplementary eccentric, and a spring connected at its upper end with the last-mentioned eccentric strap and at its lower end with the offset bracket near the lower portion of the governor eccentric strap.

4. The combination with a driven shaft, a governor eccentric thereon and a governor eccentric strap cooperable with said eccentric, of a supplementary eccentric comprising two members secured together and secured to the driven shaft in proximity to the governor eccentric, said supplementary eccentric having peripheral ribs projecting from its respective members, an eccentric strap cooperable with the supplementary eccentric and grooved internally for the accommodation of the peripheral guide ribs on the supplementary eccentric members, and a spring connected at its upper end with the strap on the supplementary eccentric and adjustably connected at its lower end with the lower portion of the governor eccentric strap.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

WILLIAM ALEXANDER SMl TH.

Witnesses L. S. JoHNsoN, T os. C. MARKS. 

